A
abiotic
Nonliving or not containing any living organisms.
abiotic factors
nEnvironmental influences produced other than by living organisms; for example, temperature, wind patterns, humidity, pH, substrate rock type, and other physical and chemical influences.
acid fallout
Molecules of acid formed from reactions high in the atmosphere involving nitrogen, sulfur oxides, and water vapor that settle out of the atmosphere without any additional water.
acid precipitation
n: Includes acid rain, acid fog, acid snow, and any other form of precipitation that is more acidic that normal (i.e., less that pH 5.6). Excess acidity is derived from certain air pollutants, namely sulfur dioxide and oxides of nitrogen. The effects can include: fish kills and eutrophication of lakes; tree kills, leading to soil erosion; and physical corrosive damage to vehicles and buildings. Many historic buildings in Europe and the NE United States are suffering damage from severe corrosion due to acid precipitation.
aerobe
An organism that utilizes atmospheric oxygen (0 2 ) in its metabolic pathways. An organism that must have oxygen in order to survive is an obligate aerobe .
aerobic
Living or occurring only in the presence of oxygen: aerobic bacteria. 2. Of or relating to aerobes, organisms that require and utilize oxygen. 3. Involving or improving oxygen consumption by the body: aerobic exercise.
agroforestry
Production of tree crops in a manner similar to agriculture. Also, production of trees along with regular crops.
air pollution
The existence in the air of substances in concentrations that are determined unacceptable. Contaminants in the air we breathe come mainly from manufacturing industries, electric power plants, automobiles, buses, and trucks.
alternative Energy
Usually environmentally
friendly, this is energy
from uncommon sources such as
wind power or solar energy, not fossil
fuels.
alternative Fuels
similar to alternative
energy. Not fossil fuels, but
different transportation fuels like
natural gas, methanol, bio fuels and
electricity.
annual Consumption
Annual
consumption refers to the amount of
electricity used by a consumer in one
year and is typically measured in
kilowatt-hours (kWh). This information
is available on your electricity
bill or by contacting your energy provider.
anaeroben.
An organism capable of living in the absence of free oxygen (O2 ). 2: Obligate anaerobe: An organism that must live without oxygen, for whom oxygen (O2 ) is toxic.
anaerobic
1: Lacking or seriously depleted of oxygen. Opposite of aerobic. 2: Of or relating to organisms, such as certain bacteria, that can live in the absence of atmospheric oxygen (indeed, for most anaerobic bacteria, oxygen is toxic).
aquifer
Layer of water-bearing permeable rock, sand, or gravel capable of providing significant amounts of water.
atmosphere
The air surrounding the Earth, described as a series of shells or layers of different characteristics. The atmosphere, composed mainly of nitrogen and oxygen with traces of carbon dioxide, water vapor, and other gases, acts as a buffer between Earth and the sun. The layers, troposphere, stratosphere, mesosphere, thermosphere, and the exosphere, vary around the globe and in response to seasonal changes.
autotrophn
Literally, "self eater." Organisms capable of producing their own food. See primary producers . Contrast with heterotroph .
B
background extinction rate
Normal rate of extinction -- as a natural part of the evolutionary process -- of various species as a result of changes in local environmental conditions and the actions of natural evolutionary forces. Extinctions not caused or contributed to by the actions of humans.
bioaccumulation,
An increase in the concentration of a chemical in specific organs or tissues at a level higher than would normally be expected.
biodegradable
Able to be broken down into simpler substances (elements and compounds) by naturally occuring decomposers. Essentially, anything that can be ingested by an organism without causing that organism harm. 2. Nontoxic and able to be decomposed in relatively short period even on a human time scale .
biodiversity
The variety of biotic factors found within a specified geographic region. 2. The combined differences of living things, generally classified in four broad categories: Ecosystem Diversity: Variety of biomes and habitats occuring in the biosphere.
binomial nomenclature
The two-name system, developed by Carolus Linnaeus (the founder of modern taxonomy), used to assign scientific names to all living things. Homo sapiens, for example, is the scientific name for humans.
blackwater
the wastewater generated
by toilets.
biome
A specific type of terrestrial region inhabited by well-defined types of life, especially zones of vegetation, that generally cannot live outside that specific region. Examples include types of deserts ("high desert" like the Mojave or "low desert" like the Chihuahua), grasslands (prairies, coastal dunes), and forests (lodgepole pine vs. taiga; temperate rain forest; bamboo forest, tropical rain forest, cloud forest, etc.).
bionomics See ecology .
biota The plant and animal life of a region or area.
biosphere
The portion of the earth and its atmosphere in which living organisms exist or that is capable of supporting life. 2. All of earth's ecosystems combined into one inclusive unit. Also called the "ecosphere." 3. The living organisms and their environment composing the biosphere. "...all life on earth and the realms that support it, from the outermost reaches of the atmosphere to the deepest trenches of the seas." National Geographic Atlas of the World, 6th Edition.
C
carbon Dioxide (CO2)
A heavy, odorless, colorless gas that is made from carbon and oxygen. Carbon dioxide is also known as CO2. Plants need carbon dioxide to survive.
carbon Footprint
A measure of
the your impact on the environment
in terms of the amount of greenhouse
gases produced, measured in units of
carbon dioxide.
carbon Monoxide
A colorless,
odorless, and highly toxic gas commonly
created during combustion.
carbon Neutral
A company, person,
or action either not producing
any carbon emissions or, if it does,
having been offset elsewhere.
Carbon Rationing – Limiting the
amount of carbon you introduce into
the environment each year. Carbon
rationing action groups (crags) help
you reduce your carbon footprint.
carbon Sink
Carbon dioxide is
naturally absorbed by things such as
oceans, forests, and peat bogs. These
are called carbon sinks.
cFL (See Compact Fluorescent
Lamp.)
carpool
Several people joining in one car to go to school or work. By carpooling or taking public transportation less carbon monoxide and greenhouse gases are released into our air.
carrying capacity
n: The amount of animal or plant life (or industry) that can be supported indefinitely on available resources; the number of individuals that the resources of a habitat can support. Also called biological carrying capacity.
chlorofluorocarbon (CFC)
A family of compounds of chlorine, fluorine, and carbon, entirely of industrial origin. CFCs include refrigerants, propellants for spray cans (this usage is banned in the U.S., although some other countries permit it) and for blowing plastic-foam insulation, styrofoam packaging, and solvents for cleaning electronic circuit boards.
climate
Climate is the daily and seasonal weather on earth. Climate records are recorded each day and year for comparison.
climate Change
A change in temperature
and weather patterns due to
human activity like burning fossil
fuels.
commodity Electricity*
Physical
electricity in the absence of the technological,
environmental, social, and
economic benefits associated with a
specific generation source.
compact Fluorescent Lamp (CFL),
Also known as a compact fluorescent
light bulb is a type of fluorescent
lamp designed to replace an incandescent
lamp. Compared to incandescent
lamps of the same luminous
flux, CFLs use less energy and have
a longer rated life.
composting, Composte
A process whereby organic
wastes, including food and paper,
decompose naturally, resulting in
a produce rich in minerals and ideal
for gardening and farming as a soil
conditioner, mulch, resurfacing material,
or landfill cover.
conservation
Preserving and renewing,
when possible, human and
natural resources.
Conventional Power* – Power that
is produced from non-renewable fuels,
such as coal, oil, natural gas, and
nuclear material.
conventional fuels
are finite resources that cannot be replenished
once they are extracted and
used.
conservation-tillage farming
Crop cultivation in which the soil is disturbed little (minimum-tillage farming) or not at all (no-till farming) to reduce soil erosion, lower labor costs, and save energy.
coral bleaching
The loss of color from a coral as it expels its zooxanthellae-usually a stress response.
cost-benefit analysis
Estimates and comparison of short-term and long-term costs (losses) and benefits (gains) from an economic decision. If the estimated benefits exceed the estimated costs, the decision to buy an economic good or provide a public good is considered worthwhile.
D
debt-for-nature swap
Agreement in which a certain amount of foreign debt is canceled in exchange for local currency investments that will improve natural resource management or protect certain areas in the debtor country from harmful development.
deforestation
Removal of trees from a forested area without adequate replanting.
demographic transition
Hypothesis that countries, as they become industrialized, have declines in death rates followed by declines in birth rates.
desertification
Conversion of rangeland, rain-fed cropland to desert-like land, with a drop in agricultural productivity of 10% or more. It is usually caused by a combination of overgrazing, soil erosion, prolonged drought, and climate change.
dioxin
A synthetic, organic chemical of the chlorinated hydrocarbon class. It is one of the most toxic compounds known to humans, having many harmful effects, including induction of cancer and birth defects, even in extremely minute concentrations. It has become a widespread environmental pollutant because of the use of certain herbicides that contain dioxin as a contaminant.
deciduous forest
A forest containing deciduous plants and existing where temperatures are mild and rainfall is abundant
deciduous plant
A plant that sheds all or nearly all its leaves each year
decompose
To rot or decay as a result of being broken down by microorganisms
decomposers
Organisms such as bacteria and fungi that decompose dead plants and animals;
see the food chain
deforestation
The stripping away of trees. Practices or processes that result in the conversion of forested lands for non-forest uses.
desert
A land area that receives less than 10 inches (25 cm) of precipitation a year, that loses more water through evaporation than it gains from precipitation, and that has high summer temperatures
desertification
The man-made or natural formation of desert from usable land.
dewpoint
The temperature at which gaseous water condenses into visible water vapor, fog or clouds
diameter
the distance from one end to another through the center; as the diameter of the earth
dilute
To lessen the strength of a material by mixing it with another material, usually water
dirty fallout
Air pollutants dropped by prevailing winds
disperse
To spread to another location
distance
the measurement from one point to another
dormant
Inactive
drip irrigation
The practice of spraying water directly on the base of plants so that less water is needed to help them grow
drought
An extended period of unusually low rainfall
dry deposits
Air pollutants that quickly fall to the ground without combining with moisture
E
earth
the planet where we live; see planet, and planetary facts
earthday
Special day to honor earth and "going green" usually with celebrations and awareness. See earthday
earth week
Usually around April 22. Week of Earth Awareness and activities. See PP Environmental Earth Calendar
earth 911 same as earth sos
The urgency to start taking care of our world for future generations
ecological community
The interaction of living organisms with their environment
ecologist
A scientist who studies organisms and their environment
ecology
The study of living things in their environment
ecosystem
A distinct area that combines biotic communities and the abiotic environments with which they interact
ecotone
The area where two or more ecosystems merge
elevation
The height above sea level
El Niño
A warming of the surface waters of the eastern equatorial Pacific that occurs at irregular intervals of 2-7 years, usually lasting 1-2 years.
emergent layer
A forest's upper layer, produced by the tallest trees
emissions
The release of a substance (usually a gas when referring to the subject of climate change) into the atmosphere.
Emissions Cap
A limit placed on
companies regarding the amount of
greenhouse gases it can emit.
endangered
In immediate danger of becoming extinct
Energy Efficiency*
Energy
efficiency saves energy, saves
money on utility bills, and helps protect
the environment by reducing the
demand for electricity.
enhanced greenhouse effect
The concept that the natural greenhouse effect has been effected by emissions of greenhouse gases.
environment
The natural surroundings of an organism, which include everything, living and nonliving, that affects the organism
environmental impact
The result of our negative and positive actions on the environment.
ephemeral
An organism that has a short life cycle
epiphyte
A plant that grows on another plant in a relation ship of commensalism
equator
The imaginary boundary that divides the earth in half north and south
estivate
To spend the summer in a sleeplike condition of partial or total inactivity
evaporate
To change from a liquid to a gas as a result of being heated
evergreen
A plant whose needles or leaves remain green throughout the year
extinction
The dying out of a species of any living thing; the complete disappearance of a species from the earth, forever
extreme weather events
Scientists are worried by the increasing frequency and intensity of hurricanes, flooding, drought, as well as the loss of drinking water sources, reduction in productive farm land and increasing geographical spread of infectious diseases such as malaria.
F
fauna
All the animals in a particular area
fertilize
To join male sperm with a female egg
first-order consumers
Animals that eat plants
floor layer
A forest's sixth and bottom layer, made up of lichens and mosses growing in the remains of fallen trees, branches, and leaves
flora
All the plants in a particular area
fluorocarbons
Carbon-fluorine compounds that often contain other elements such as hydrogen, chlorine, or bromine. Common fluorocarbons include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs).
fluid
Matter in a gas or liquid state
food chain (see it)
A series of organisms linked together in the order in which they feed on each other
food web
All of the interlinked food chains in a community or an ecosystem
forest
A biome whose main vegetation consists of large groups of trees that usually grow close enough together that their tops touch, shading the ground
fossil fuel
Any deposit of fossil materials, such as petroleum, natural gas, or coal, that can be burned to produce energy
fossils
Traces of the remains of prehistoric animals and plants
Fuel Cell
A technology that uses
an electrochemical process to convert
energy into electrical power. Often
powered by natural gas, fuel cell
power is cleaner than grid-connected
power sources. In addition, hot water
is produced as a by-product.
G
garbage
Items that are discarded also "waste". Garbage often refers to food disgarded and other items to "trash" or waste".
geothermal energy
Hea t energy from within the earth
geosphere
The soils, sediments, and rock layers of the Earth's crust, both continental and beneath the ocean floors.
Generation — The process of making
electricity. The term may also
refer to energy supply.
glacier
A multi-year surplus accumulation of snowfall in excess of snowmelt on land and resulting in a very large mass of ice
global
worldwide learn about your world
global warming / climate change
The terms "climate change" and "global warming" are often used to mean the same thing. Global warming emphasises the rise in average temperatures. see global warming
grassland
A biome whose main vegetation is grass or grasslike plants
go green
Living a "green" lifestyle and caring for earth. recycle, recuse, reduce. learn more at earth matters
Green Design
A design, usually
architectural, which conforms to environmentall
sound principles of
building, material and energy use.
greenhouse
A structure, usually made of glass or clear plastic, that provides a protected, controlled environment for raising plants indoors
greenhouse effect
The effect of certain gasses that trap heat in the atmosphere and raise the temperature of the planet. see greenhouse effect
greenhouse gases
Atmospheric gases, mostly carbon dioxide and water vapor, that trap the warmth from the sun, just as glass traps warmth in a greenhouse
green Power*
Renewable energy
resources such as solar, wind, geothermal,
biogas, biomass and lowimpact
hydro generate green power.
greywater
Waste water that does
not contain sewage or fecal contamination
(such as from the shower) and
can be reused for irrigation after filtration.
grid
The network of wires and
cables that transport electricity from
a power plant to your home or business.
guest
Organism living on or in a host; a parasite
H
habitat
The physical place, such as a desert, forest, or single tree, where a plant or animal lives and which is usually described by its physical features; also the natural home of a community.
halocarbons
Compounds containing either chlorine, bromine or fluorine and carbon.
hazardous materials
solid or liquid materials involving or exposing one to risk (as of loss or harm)
Hemisphere
Half of the Earth, usually conceived as resulting from the division of the globe into two equal parts, north and south or east and west.
herbivores
Animals that eat only plants; see food chain
herb layer
A forest's fifth layer, found close to the ground and containing plants such as flowers, grasses, ferns, seedling trees, and shrubs
hibernate
To spend the winter in a sleeplike condition of partial or total inactivity
host
An organism on or in which a parasite lives and whose support of the parasite often leads to its own injury
hot desert
A desert with hot daytime temperatures for most of the year
hurricanes
Severe tropical storms whose winds exceed 74 mph.
hydrocarbons
Substances containing only hydrogen and carbon. Fossil fuels are made up of hydrocarbons.
hydrosphere
liquid of earth
Hydroelectric Energy
Electric
energy produced by moving water.
(See Hydro Power.)
Hydro Power
Electricity generated
by the flow of falling water, usually
controlled by dams. (See Hydroelectric
Energy.)
Hydrofluorocarbons
Used as solvents
and cleaners in the semiconductor
industry, among others; experts
say that they possess global
warming potentials that are thousands
of times greater than CO2.
I
ice core
A cylindrical section of ice removed from a glacier or an ice sheet in order to study climate patterns of the past.
incinerate
To burn to ashes
insolation
The amount of solar energy that reaches the earth
insulator
A material that does not easily gain or lose energy
Intergovernmental Panel on Climate Change (IPCC)
The IPCC was established in 1988 by the World Meteorological Organisation and the United Nations Environmental Programme.
J
Jet stream
Rivers of high-speed air in the atmosphere. Jet streams form along the boundaries of global air masses where there is a significant difference in atmospheric temperature.
K
kelp
Underwater forests of tall, brown algae that grow in cool coastal waters
Kilowatt-hour*
A kilowatt-hour
(kWh) is a standard metric unit of
measurement for electricity.
kyoto protocol
Sponsored by the United Nations, the Kyoto Protocol is an agreement between countries to reduce their greenhouse gas emissions. It was established in Japan in 1997 but didn't become international law until 2004.
L
landfill
Land waste disposal site in which waste is generally spread in thin layers, compacted, and covered with a fresh layer of soil each day
leachate
A mixture of rainwater and other liquids that comes from garbage
Life Cycle Assessment
A methodology
developed to assess a product’s
full environmental costs, from raw
material to final disposal.
Lightning
A discharge of atmospheric electricity accompanied by a vivid flash of light. During thunderstorms, static electricity builds up within the clouds.
liquid
flowing freely like water
lichen
A combination of two organisms, fungus and green algae, that live in a relationship of mutualism
Lithosphere
The component of the Earth's surface comprising the rock, soil, and sediments.
live earth
Concert for the earth held in majopr cities worldwide.
M
magma
Molten, or melted, rock within the earth
mantle
the part of the earth between the crust and the core
marine life
Plants and animals of the ocean
Megawatt-hour*
A megawatthour
(MWh) is equal to 1,000 kWh.
meteorologist
A scientist who studies the weather
meteorology
Study of the atmosphere and its phenomena.
methane (CH4)
A hydrocarbon that is a greenhouse gas with a global warming potential most recently estimated at 23 times that of carbon dioxide (CO2).
microorganisms
Living organisms so small they can only be seen through a microscope
midnight zone
The area of the ocean beneath the twilight zone, extending from 3,000 feet (1,000 m) down to the ocean floor, where only about 1 percent of marine life can survive
migrate
To move from one place to another
mitigation
Mitigation refers to activities which try to reduce the amount of greenhouse gases emitted into the atmosphere;
molecule
The smallest part of a substance that has all the characteristics of the substance
mountain
A biome of high ground with various types of vegetation depending on the elevation
municipal solid waste (MSW)
Residential solid waste and some non-hazardous commercial, institutional, and industrial wastes. This material is generally sent to municipal landfills for disposal.
N
natural gas
Underground deposits of gases consisting of 50 to 90 percent methane (CH4) and small amounts of heavier gaseous hydrocarbon compounds such as propane (C3H8) and butane (C4H10).
natural resources
things from nature; see earth matters
nekton
Animals, such as fish and whales, that move independently of water currents between the bottom and surface of the ocean
neutral
Having a pH of 7 and thus being neither acidic nor basic
niche
The location and role or job for which a species is well suited within its community, including its habitat, what it eats, its activities, and its interaction with other living things
nitrogen oxides
(NOx)Gases consisting of one molecule of nitrogen and varying numbers of oxygen molecules. Nitrogen oxides are produced in the emissions of vehicle exhausts and from power stations.
nitrous oxide (N2O)
A powerful greenhouse gas with a global warming potential of 320.
node
Where leaves grow from a plant stem
nonbiodegradable
Not able to be consumed and/or broken down by biological organisms. Nonbiodegradable substances include plastics, aluminum, and many chemicals used in industry and agriculture.
nonrenewable resource
Resources exist in the earth that are non renewable because we are taking them away and using them at a much faster rate than they were formed. Examples are copper, aluminum, coal, and oil.
Northern Hemisphere
The area of the earth above the equator
Northern temperate zone
The region between latitudes 23.5¡N and 66.5¡N.
nuclear energy
Energy produced from changes in atomic nuclei
nuclei
The heavy centers of atoms
nutrition:
To be nourished: the process by which living things or organisms take in and utilize food material.
O
oceans
The largest bodies of water on earth
offsetting
Offsetting involves calculating the total amount of carbon dioxide that will be emitted from a certain activity, for example plane travel or a conference call.
omnivores
Animals that eat both plants and animals
organic
All living things, and products that are uniquely produced by living things, such as wood, leather, and sugar. 2. All chemical compounds or molecules, natural or synthetic, that contain carbon atoms as an integral part of their structure.
organism
All living things, including people, plants, animals, bacteria, and fungi
oxygen
An atmospheric gas made up of two oxygen atoms that is necessary for respiration
oxygen cycle
The recycling of oxygen-containing gases between plants and animals
ozone
A form of oxygen made up of three oxygen atoms that forms the ozone layer.
ozone cycle
The ongoing process by which ozone breaks down and re-forms in the ozone layer
ozone depletion
Damage to the ozone layer
ozone mini-hole(s)
Rapid, transient, polar-ozone depletion. These depletions, which take place over a 50-kilometer squared area, are caused by weather patterns in the upper troposphere.
ozone layer
Scattered molecules of ozone gas that collect in the upper atmosphere of the earth in a layer that shields the earth from excessive ultraviolet light
P
parasite
An organism that lives on or in a host organism and that gets its food from or at the expense of its host
parasitism
A relationship in which one organism, a parasite, secures its nourishment by living on or inside a host organism at the expense of its host
permafrost
A layer of permanently frozen soil underground. An important feature of a tundra
pH
The unit of measure for determining whether a solution is acidic, basic, or neutral
pH scale
The scale, ranging from 0 to 14, used to measure the pH of a solution.
photosynthesis
The process by which plants use light energy trapped by chlorophyll to change carbon dioxide and water into food
Photovoltaic Panels – Solar panels
that convert sunlight into electricity.
phytoplankton
Plant plankton
plankton
Small to microscopic organisms that live near the ocean's surface and are carried along by the currents. Animal plankton are called zooplankton, and plant plankton are called phytoplankton
pollutants
Substances that destroy the purity of air, water, or land
polyp
A tiny, tubelike marine animal of which live coral is made, one end of which is attached to the sea bottom, to rocks, or to one another and the opposite end of which is a mouth surrounded by fingerlike, stinging tentacles
population
Organisms of the same species living together in a specific area; also the total count of individuals in a specific area, such as the population of a town, see the world population
post consumer waste
Waste collected
after the consumer has used
and disposed of it.
precipitation
Water that returns to the earth as rain, hail, sleet, or snow
precycle, precycling
Conciousness about what you buy and use and choosing products based on less waste reduction. learn about precycling
predator
An animal that hunts and kills other animals for food
prevailing winds
Winds that blow consistently from one direction
producers
Organisms (specifically, plants) that can produce their own food, see food chain
Q
R
3 "r's"
reduce, reuse, recycle
4 R's
Reduce Reuse Recycle Repair
radiation
Energy transfer in the form of electromagnetic waves or particles that release energy when absorbed by an object.
radioactive
Giving off or capable of giving off radiant energy in the form of particles or rays, as in alpha, beta, and gamma rays
rain forest
An evergreen woodland of the tropics distinguished by a continuous leaf canopy and an average rainfall of about 100 inches per year. Rain forests play an important role in the global environment.
recycle
To use again; see Planetpals recycle center
recycling
Collecting and reprocessing a resource so it can be used again.see Planetpals recycle center
reduce
Using less
reforestation
Planting of forests on lands that have previously contained forests but that have been converted to some other us
renewable
Able to be replaced or replenished, either by the earth's natural processes or by human action. Air, water, and forests are often considered to be example of renewable resources.
renewable energy
Known as green or environmentally-friendly energy, renewable energy comes from natural sources that won't run out. These include the wind, the sun, the waves and biofuels such as wood, manure or flaxseed oil
renewable resource
Resources exist in the earth that are non renewable because we are taking them away and using them at a much faster rate than they were formed. Examples are copper, aluminum, coal, and oil.
nonbiodegradable
Not able to be consumed and/or broken down by biological organisms. Such as plastics, aluminum, and many chemicals used in industry and agriculture.
nonrenewable resource
Resources exist in the earth that are non renewable because we are taking them away and using them at a much faster rate than they were formed. Examples are copper, aluminum, coal, and oil.
repair
To fix
respiration
An ongoing process by which plants and animals take in oxygen and give out carbon dioxide
reuse
use something another time; see earth matters
S
salinity
The degree of salt in water. The rise in sea level due to global warming would result in increased salinity of rivers, bays and aquifers. This would affect drinking water, agriculture and wildlife.
sanitary landfill
A solid waste disposal area that protects the environment from leachate
savannah
A land which is without trees but with much grass either tall or short (such as the African savannah)
scrub
Plants, such as small trees and shrubs, that usually have many stems, unlike trees which have one main trunk
sea level
The level of the surface of the ocean
second-order consumers
Animals that eat first-order consumers
semiarid
Having a climate that is dry, but not as dry as a desert
sink
Any process, activity or mechanism which removes a greenhouse gas, an aerosol or a precursor of a greenhouse gas or aerosol from the atmosphere
social group
A small population that lives and travels together and in some ways depends on each other for its well-being
soil erosion
The wearing away of the soil by wind or water
solar energy
Energy from the sun
solar radiation
Radiation emitted by the Sun.
solution
A mixture made by dissolving a substance in a liquid, such as water
Southern Hemisphere
The area of the earth below the equator
southern temperate zone
The region between latitudes 23.5¡S and 66.5¡S
smog
formation of photochemical ozone
species
A group of similar and related organisms
stern review
In 2006, economist Sir Nicholas Stern published a report - The Stern Review - on the economics of climate change.
stomata
Tiny pores on the surface of plant leaves that can open and close to take in and give out water vapor
stratus
Clouds which are produced by stable air and looks like an even blanket
stratonimbus
Stratus clouds which produce a steady rainfall
streamflow
The volume of water that moves over a designated point over a fixed period of time.
subcanopy layer
A forest's third layer, formed by the leaves and branches of shorter trees under the canopy layer
sublime climate change
The change in the climate caused by global warming. see sublime climate change
succulent plants
Plants that have thick, fleshy leaves or stems for storing water
Sulfur Dioxide
SO2 is a heavy,
smelly gas which can be condensed
into a clear liquid. It is used to make
sulfuric acid, bleaching agents, preservatives
and refrigerants and is a
major source of air pollution.
sunlight zone
The upper 488 feet (150 m) of the ocean, where sunlight penetrates and where about 90 percent of all marine life live
superorganism
An organism, such as coral or the Portuguese man-of-war, that appears to be one organism, but in fact is a number of colonial animals joined together
sustainability
To keep in existence; maintain. To supply with necessities or nourishment; provide for earth also "sustainable living".
T
temperature
A measure of the energy in a substance. The more heat energy in the substance, the higher the temperature.
third order consumers
Animals that eat first- and/or second-order consumers
threatened species
Wild species that is still abundant in its natural range but is likely to become endangered because of a decline in numbers.
top consumer
An organism at the top of a food chain
trace gas
Any one of the less common gases found in the Earth's atmosphere.
transpiration
The loss of water into the atmosphere through the stomata of plants
trash
Items that are discarded also "waste".
tree line
The height on a mountain above which the climate is too cold for trees to grow
tropical rain forest
A forest that gains more water from precipitation than it loses through evaporation. Located in the tropical zone and having an average temperature between 70¡ and 85¡F (21¡ and 29¡C) and average yearly rainfall of more than 80 inches (200 cm)
tropical zone
The region between latitudes 23.5¡S and 23.5¡N
troposphere
The lower atmosphere, to a height of 8-15 km above Earth, where temperature generally decreases with altitude, clouds form, precipitation occurs, and convection currents are active. See atmosphere.
tropospheric ozone (O3)
Ozone that is located in the troposphere and plays a significant role in the greenhouse gas effect and urban smog. See Ozone for more details.
tundra
A treeless biome mainly in the north polar areas that has long frigid winters and brief summers and where grasses, mosses, lichen, low shrubs, and a few flowering plants survive
twilight zone
The shadowy area of the ocean, extending from the bottom of the sunlight zone down to about 3,000 feet ( l ,000 m), where plants cannot grow and where animals are less numerous and smaller
High-energy rays of sunlight
U
urban heat island
Buildup of heat in the atmosphere above an urban area.
universe
The solar system beyond our world; see universe
ultraviolet
(UV) light. Ultraviolet. See ultraviolet radiation.
ultraviolet radiation
The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation constitutes only about 5 percent of the total energy emitted from the sun, it is the major energy source for the stratosphere and mesosphere, playing a dominant role in both energy balance and chemical composition.
V
vegetation
Plant life
virga
Rain which fall in the sky but evaporates before it reaches the ground
volcano
A naturally occurring vent or fissure at the Earth's surface through which erupt molten, solid, and gaseous materials. Volcanic eruptions inject large quantities of dust, gas, and aerosols into the atmosphere. A major component of volcanic clouds is sulfur dioxide, a strong absorber of ultraviolet radiation.
W
waste
Waste, rubbish, trash, garbage, or junk is unwanted or undesired material.
wastewater
Water that has been used and contains dissolved or suspended waste materials
water cycle
The recycling of water between the earth and the atmosphere
water energy
Energy from moving water
water vapor
The most abundant greenhouse gas, it is the water present in the atmosphere in gaseous form. Water vapor is an important part of the natural greenhouse effect.
weather
Atmospheric condition at any given time or place. learn about weather
weed
Any plant that grows where it is not wanted
wet deposits
Air pollutants that mix with moisture in the air before falling to the ground
wild flower
A flowering plant that grows in woods, deserts, or other natural areas
wind breaks
The practice of planting trees and shrubs to protect fields from soil erosion by wind
wind energy
Energy from moving air
wind Power
Energy generated
from large propellers that when
spun by the wind, drive turbines
that power generators and create
electricity.
wind Turbine
A machine that
captures the energy of the wind and
transfers the motion to an electric
generator shaft for the creation of
electricity.
X
Y
Z
zooplankton
Animal plankton
zooa
controlled environment where we visit and learn about animals
other
3 "r's"
reduce, reuse, recycle learn about the "r's"
4 "r's"
reduce, reuse, recycle, repair learn about the "r's"
Do you have a language to share with us?
If so,write to us,we will add it to this dictionary.
NEXT:
I OUR SITE MAP I ABOUT PLANET PALS I FREEBIES I CLUBHOUSE I COLORING PAGE I WEATHER QUIZ I CARD GAME I CARD TRICKI RECYCLE KITS I STICKERS I BEAD CRITTERS I EMAIL GREETINGS I CRAFTSI HOLIDAY FUN I
|